Sodium Iodide → 5-(3-ethoxycarbonylpropylamino)-6,8-difluoro-2-(3-fluoro-4-pivaloylaminophenyl)-4H-1-benzopyran-4-one

HRID 1736222노트

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HRID 1736222 반응식
[NH2:1][C:2]1[C:7]2[C:8](=[O:26])[CH:9]=[C:10]([C:12]3[CH:17]=[CH:16][C:15]([NH:18][C:19](=[O:24])[C:20]([CH3:23])([CH3:22])[CH3:21])=[C:14]([F:25])[CH:13]=3)[O:11][C:6]=2[C:5]([F:27])=[CH:4][C:3]=1[F:28].Br[CH2:30][CH2:31][CH2:32][C:33]([O:35][CH2:36][CH3:37])=[O:34].C(=O)([O-])[O-].[K+].[K+].[I-].[Na+].[Cl-].[NH4+]>CN(C)C=O>[CH2:36]([O:35][C:33]([CH2:32][CH2:31][CH2:30][NH:1][C:2]1[C:7]2[C:8](=[O:26])[CH:9]=[C:10]([C:12]3[CH:17]=[CH:16][C:15]([NH:18][C:19](=[O:24])[C:20]([CH3:23])([CH3:22])[CH3:21])=[C:14]([F:25])[CH:13]=3)[O:11][C:6]=2[C:5]([F:27])=[CH:4][C:3]=1[F:28])=[O:34])[CH3:37]

참가 물질

7

반응물 5

HCID 5238Sodium IodideHCID 11430Potassium CarbonateHCID 25517Ammonium ChlorideHCID 76300Ethyl 4-bromobutyrateHCID 194349345-amino-6,8-difluoro-2-(3-fluoro-4-pivaloylaminophenyl)-4H-1-benzopyran-4-one

생성물 1

HCID 194350065-(3-ethoxycarbonylpropylamino)-6,8-difluoro-2-(3-fluoro-4-pivaloylaminophenyl)-4H-1-benzopyran-4-one수율 54.1%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

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온도
100 °C

실험 절차

1.03 g (2.64 mmol) of 5-amino-6,8-difluoro-2-(3-fluoro-4-pivaloylaminophenyl)-4H-1-benzopyran-4-one obtained in Example 66 was dissolved in 30 mL of dimethylformamide under argon atmosphere, 11.5 mL (79.2 mmol) of ethyl 4-bromobutyrate, 1.83 g (13.3 mmol) of potassium carbonate and 3.96 g (26.4 mmol) of sodium iodide were added and the mixture was stirred at 100° C. for 48 hours. The reaction solution was cooled on ice, an aqueous saturated solution of ammonium chloride was added and the mixture was extracted with ethyl acetate. The organic layer was washed once with water and once with an aqueous saturated solution of sodium chloride and dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography (chloroform:acetonitrile=25:l) and recrystallized from ethyl acetate/n-hexane to give 720 mg of 5-(3-ethoxycarbonylpropylamino)-6,8-difluoro-2-(3-fluoro-4-pivaloylaminophenyl)-4H-1-benzopyran-4-one (yield: 54%).

후처리

  1. temperatureThe reaction solution was cooled on ice
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe organic layer was washed once with water and once with an aqueous saturated solution of sodium chloride
  4. dry with materialdried over anhydrous sodium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customthe residue was purified by silica gel column chromatography (chloroform:acetonitrile=25:l)
  7. customrecrystallized from ethyl acetate/n-hexane

출처 및 근거

ORD 기록
ord-b1b0f009bca342d4bdc1ebf382f52e90
출처 데이터셋
uspto-grants-1996_07
특허 번호
US05539112

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